 <!-- This is the target div. id must match the href of this div's tab -->
<div class="notification attention png_bg"> <a href="#" class="close"><img src="resources/images/icons/cross_grey_small.png" title="Close this notification" alt="close" /></a>
  <div> This is a Content Box. You can put whatever you want in it. By the way, you can close this notification with the top-right cross. </div>
</div>